Germination percentage
Compute the germination percentage or final germination percentage or germinability.
GermPercent(germinated.seeds, germ.counts, total.seeds, partial = TRUE)
germinated.seeds |
Number of germinated seeds |
germ.counts |
Germination counts at each time interval. Can be partial
or cumulative as specified in the argument |
total.seeds |
Total number of seeds. |
partial |
logical. If |
Germination percentage is computed as follows (ISTA 2015).
Where, \(N_{g}\) is the number of germinated seeds and \(N_{t}\) is the total number of seeds.
The value of \(N_{g}\) can be either specified using the argument
germinated.seeds or is computed from the germ.counts argument.
The germination percentage (%) value.
ISTA (2015). “Chapter 5: The germination test.” International Rules for Seed Testing. International Seed Testing Association, Zurich, Switzerland., 2015, i–5.
x <- c(0, 0, 0, 0, 4, 17, 10, 7, 1, 0, 1, 0, 0, 0) y <- c(0, 0, 0, 0, 4, 21, 31, 38, 39, 39, 40, 40, 40, 40) # From partial germination counts GermPercent(germ.counts = x, total.seeds = 50) # From cumulative germination counts GermPercent(germ.counts = y, total.seeds = 50, partial = FALSE) # From number of germinated seeds GermPercent(germinated.seeds = 40, total.seeds = 50)
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